/*
shadow.c - NSS lookup functions for shadow database
Copyright (C) 2006 West Consulting
Copyright (C) 2006-2015 Arthur de Jong
Copyright (C) 2010 Symas Corporation
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "config.h"
#include <string.h>
#include <errno.h>
#include "prototypes.h"
#include "common.h"
#include "compat/attrs.h"
/* read a single shadow entry from the stream */
static nss_status_t read_spwd(TFILE *fp, struct spwd *result,
char *buffer, size_t buflen, int *errnop)
{
int32_t tmpint32;
size_t bufptr = 0;
memset(result, 0, sizeof(struct spwd));
READ_BUF_STRING(fp, result->sp_namp);
READ_BUF_STRING(fp, result->sp_pwdp);
READ_INT32(fp, result->sp_lstchg);
READ_INT32(fp, result->sp_min);
READ_INT32(fp, result->sp_max);
READ_INT32(fp, result->sp_warn);
READ_INT32(fp, result->sp_inact);
READ_INT32(fp, result->sp_expire);
READ_INT32(fp, result->sp_flag);
return NSS_STATUS_SUCCESS;
}
#ifdef NSS_FLAVOUR_GLIBC
/* get a shadow entry by name */
nss_status_t NSS_NAME(getspnam_r)(const char *name, struct spwd *result,
char *buffer, size_t buflen, int *errnop)
{
NSS_GETONE(NSLCD_ACTION_SHADOW_BYNAME,
WRITE_STRING(fp, name),
read_spwd(fp, result, buffer, buflen, errnop));
}
/* thread-local file pointer to an ongoing request */
static TLS TFILE *spentfp;
/* start listing all shadow users */
nss_status_t NSS_NAME(setspent)(int UNUSED(stayopen))
{
NSS_SETENT(spentfp);
}
/* return a single shadow entry read from the stream */
nss_status_t NSS_NAME(getspent_r)(struct spwd *result,
char *buffer, size_t buflen, int *errnop)
{
NSS_GETENT(spentfp, NSLCD_ACTION_SHADOW_ALL,
read_spwd(spentfp, result, buffer, buflen, errnop));
}
/* close the stream opened by setspent() above */
nss_status_t NSS_NAME(endspent)(void)
{
NSS_ENDENT(spentfp);
}
#endif /* NSS_FLAVOUR_GLIBC */
#ifdef NSS_FLAVOUR_SOLARIS
#ifdef HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN
static char *spwd2str(struct spwd *result, char *buffer, size_t buflen)
{
/* snprintf writes a terminating \0 on Solaris */
snprintf(buffer, buflen, "%s:%s:", result->sp_namp, result->sp_pwdp);
if (result->sp_lstchg >= 0)
snprintf(buffer, buflen - strlen(buffer) - 1, "%d", result->sp_lstchg);
strlcat(buffer, ":", buflen);
if (result->sp_min >= 0)
snprintf(buffer, buflen - strlen(buffer) - 1, "%d", result->sp_min);
strlcat(buffer, ":", buflen);
if (result->sp_max >= 0)
snprintf(buffer, buflen - strlen(buffer) - 1, "%d", result->sp_max);
strlcat(buffer, ":", buflen);
if (result->sp_warn >= 0)
snprintf(buffer, buflen - strlen(buffer) - 1, "%d", result->sp_warn);
strlcat(buffer, ":", buflen);
if (result->sp_inact >= 0)
snprintf(buffer, buflen - strlen(buffer) - 1, "%d", result->sp_inact);
strlcat(buffer, ":", buflen);
if (result->sp_expire >= 0)
snprintf(buffer, buflen - strlen(buffer) - 1, "%d", result->sp_expire);
strlcat(buffer, ":", buflen);
if (result->sp_flag > 0)
snprintf(buffer, buflen - strlen(buffer) - 1, "%x", result->sp_flag);
if (strlen(buffer) >= buflen - 1)
return NULL;
return buffer;
}
#endif /* HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN */
static nss_status_t read_result(TFILE *fp, nss_XbyY_args_t *args)
{
READ_RESULT(spwd, &args->erange);
}
static nss_status_t shadow_getspnam(nss_backend_t UNUSED(*be), void *args)
{
NSS_GETONE(NSLCD_ACTION_SHADOW_BYNAME,
WRITE_STRING(fp, NSS_ARGS(args)->key. name),
read_result(fp, args));
}
static nss_status_t shadow_setspent(nss_backend_t *be, void UNUSED(*args))
{
NSS_SETENT(LDAP_BE(be)->fp);
}
static nss_status_t shadow_getspent(nss_backend_t *be, void *args)
{
NSS_GETENT(LDAP_BE(be)->fp, NSLCD_ACTION_SHADOW_ALL,
read_result(LDAP_BE(be)->fp, args));
}
static nss_status_t shadow_endspent(nss_backend_t *be, void UNUSED(*args))
{
NSS_ENDENT(LDAP_BE(be)->fp);
}
static nss_backend_op_t shadow_ops[] = {
nss_ldap_destructor,
shadow_endspent,
shadow_setspent,
shadow_getspent,
shadow_getspnam
};
nss_backend_t *NSS_NAME(shadow_constr)(const char UNUSED(*db_name),
const char UNUSED(*src_name),
const char UNUSED(*cfg_args))
{
return nss_ldap_constructor(shadow_ops, sizeof(shadow_ops));
}
#endif /* NSS_FLAVOUR_SOLARIS */